Core retainer



Patented @ich Z6, fit-M5 nel HUBERT EA ALLEN. OF "WHITTIIER, CALIFORNIA.ASSIGNR TO ELLITT CURIE Dll' CGMPANY. A CORPORATION OF CALIFORNIA..

CORE RETANERi Application filed April 52'?. 1925A rthis inventionrelates to Core retainerhfor eore rl ils. and i5 inore particularly.'adapted te i eore retainer wherein iiieans are provide 'lor retaiiiingthe Core within 5 the core-rece ing;- harrel and which iiieans are soConstr. ed and mounted :in to er leetuallj.v retain the eoie withoutcutting' or damaging.Y the eore' during: the drilling.

In the art of core drilling, when the eore has heen drilled.y it isseid'neinelyy praetieal t0 shut oli' the water tlow and rotate the eoi'edrill aly zi higher rate nl' epeed .so as lo huri'f the eoi'e so thatthe Aaine will he retained in the eore-reeeii'ing 1iziirel when the coredrill is i'vithdrawn 'lroui ihe hore. This liurningr of the core drill:riso hurn.C the entiere 'troni the Core drills` and neeessitales arepair ol the eoie drill `l'or iaeli eore tali'n ing operation.

lt is,y therefore, an olilieet ol this invention lo provide :i retainingnieiuher adapted to retain the core nithin the eore-reeeivingl har'relso that the neeenr-rity o? hurning the eore will be eliminated.

Another olijeet ol this invention is to proride eOre retainers l'or eoredrillsI ol simple eonstiuetion :indso inoui'ited that the :laine willnot daniagre. eut or ehop the core in the wiwi-reifenin.;r harrel duringthe taking;` of

30 the eore. i

Other ohjeet` and advantages ol` tli's invention will he apparent'Jtroni the following detailed deeription ol- :i vpreierred enihodinientthereof. as illustiated in the aeeoinpany, inl drawinge.

ln the drawings:

Figi. l 'in a l ide elevation ot' a eore retainer. illustratingr thesaine as pai-lliv in eenti'al Seelion. and illnetratiiin' :1 eoreretainiiigiF ineiiihei mounted within the eoie retainer ol the eore dril:iiiliodviiigf this inrention.

Fig. 2 is. a iop plan View taken idistantialliY on the line Fig'. 1.

ln the preferred einhodiinenl of thin` invention illustrated iii thedrawings. in)v eore retaining iiien'ilier is illustrated as positionedwihin a eore drill Constructed iii accordance with t i cop-ending;application. hay Oliverj Serial Nuinher 9,455. tiled lli`eliruar5v iti.1925'. llowever. it: is lo he understood that this inrention isadaplahle l'or une in an)v core drill. i

'l`he eore retainer ol' the eore drill illnsti'ated in the drawingseoiiiprines :i barrel l which may he a continuation of the drilling.;u

Serial NoA 26.140.

Stein sind which harrel l i.C #new threaded to the eoi'e drill head a;illustrated hr means oll tapered lhi ads il. i hnshino' lliniseeuredwithin the interior ol the liai'iel l lnv :inv :suitahle ii'ieans..Qui-h as the ihreadsiilhnitifited n 5 and the inner hai-rel ti in.Cere-w threaded in this einhodiinent' of thi ini'eii tion to thehushiii: ll. Si., eireiinl'ei'ential shoulder i' is formed iii the bodyol the head and is provided with a raee t5. n, ring- 9 hai'infr a,soiiipleinentar;v rare 1t) is adapted to Sea: upon the Shoulder i' andto lie niaintained in poi'tioii ln' nieainol` the bushing pluralir)` oi'liiinersV ll. oip spring steel or a lilfe inaleiial. are .-eeui'ed tothe ring 9 preterahl)l in reee -=e l2 hi' ani' suitahlc n ean v sneh :othe iiiieta lil. .'l`heiliiie'ers lL lieinLr seeiired iii the rere es l2no as lto provide :i lhish or even inner urlare oll the ring' Si. Theinner iirl'aee ol the rin;T E) ie preieraiily ol the aiiie or ot',JiilaflitlyA le diana ter than the inner diameter of the inner harA rel(t. lleariun ineinhers 'il are inoniited within the reeeeee 'i' and lltand 'the heariniiI nieiuheiw are herein illustrated an eoinpiiing.yhardened Veleel halls. rl`he Operation of this eore retainingT ineinherin the Core `loi-ined hr iiieans-` oil the eoie drill head-'17. passingupward through the ring tl and into the lgrrel tl where lhelan'ieisiengziged liv the linger ll. it. lie-ius? understood` thai` tliiiinward dire 'iig ol the linger 'il in herein exaggerated Vl'or thepiirpose ot` yilluftration.

,fis the ore within the hai'iei t3 is :i eo i'inuation ol' the eorehein;Y toi-ined ln; the head 2. the saine will tend to rtniiain Staftionary when the eore liarrel t i.--t rotated So that ilI the lingeiv llwere iiiaintaine-il f ntionarji' the saine would eut or ehop thinv eoreand lherel'ore h r iiiountinfj the fingern il upon 'the rin.;r S) andprovi ling-the hearing' nienilier litYV the lingers il are permitted toreniaiii at reet or to rotate aS theI Core is ro tated. nneh rotation ofthe lingers 1l being Caused only hy the rotation of the eore withiii theharrel (l. it heinnr understood that there is maintained a elearaneebetween the hushingf ll and the ripper edge oic the ring 9 and aelearanee between the outer perimeter nl" the ring 9 and the core drillhead 2.

it; will he apparent from the foregoing that; l have provided a simpleand e,\'treinel}}Y etlieient. core retaining ineinher which is easilyadaptahle to eore drills as now manu faetured and which is partieuiarlyapplica.-

;om the Spirito' my inifenlion as Set ir lle :appended claim.

rim: core drill, the combination of a core li-ill heelala im oner corebarrel screw-thread ifi ro he said hen, e, core retainer, freely l i.woured Within the core drill head and heving inwardly projecting coreretaining lingers, :i bushing sern-threaded to `the Core drill headposition to maintain the Lore reainer from endwise motion, :1mi a vor@.receiving member screw-thrrmlod to the bushing and having :i centralpassage there through into which the said linger@ project.

Signed et Compton, California, this. lh day of March, 1925.

HUBERT ALLEN.

